*{
	margin: 0; 
}
.my_left{
	width: 12%;
	height: 100%;
	float: left;
	background: #ededed;
}
.my_left ul{
	cursor: pointer;
	border-bottom: 1px solid #e5e5e5;
}
.my_left ul,li{
	padding: 6px 0px 6px 20px;
	line-height: 100%;
	list-style-type: none;
}
.my_left ul ul{
	display: none;
}
.my_left ul ul li{
	margin: 10px 0px 10px 0px;
}